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Last updated on April 18, 2014 at 21:21 EDT
Early close image of comet Borrelly
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Early close image of comet Borrelly

March 18, 2003
The solid nucleus of comet Borrelly is barely resolved in this image, enhanced to reveal the highly collimated dust extending towards the bottom left corner of the picture. The jet is attributed to dust carried outward by gas expanding outwards into a cone about 20 degrees across.